You can force restart your device to have a try. If you are sure that the power supply is normal but the MacBook black screen of death issue persists, there may be some temporary issues on your Mac. Method 2: Force Restart Your Mac Computer If you are using a MacBook Air or MacBook Pro, you can charge your device and then press the Power button to see whether it can boot normally. You can check the power outlet to see whether the power supply is normal. When your Mac computer goes to a black screen, the first thing you need to do is to check the power for your device. Restore your Mac from a Time Machine backup.Use Disk Utility to repair your startup disk.
